Pressure attachment for head sets



J. M. LQWREY PRESSURE ATTACHMENT FOR HEAD S ETS Filed Sept. 25, 1925 H nm" Jahn M. Low/*6 v fi v bkozm Patented Aug. 31, 1926.

UNITED STATES JOHN M. LOWREY, OF WASHINGTON, DISTRICT OF COLUMBIA.

\ I PRESSURE ATTACHMENT FOR HEAD SETS.

My invention relates to a device adapted to be readily attached to thecommon type of ear phones now in use in connection with radio receptionwithout the necessity of changing or altering the ear phone in anymanner and has for its object to provide a means for relieving thepressure upon the ears caused by the pressure exerted upon the earphones due to the tension of the head band.

A further object of the invention is to provide a means whereby thepressure upon the ears may be regulated to suit the wearer of the earphones. 4

A further object is to provide a device of the type to be describedwhich is simple in construction and inexpensive in manufacture but atthe same time efficient in its purpose.

lVith these objects and other objects hereinafter set forth in view, myinvention consists in the construction and combination of elementshereinafter described and claimed and while it is to be pointed out thatthis form shown in the drawings is the preferred construction of mydevice it is to be understood that I may deviate therefrom withoutdeparting from the spirit of the invention as set forth in the claim.

It is a known fact by those who use ear phones in connection with radioreception and the like, that the use thereof for any appreciable lengthof time causes the ears to become sore and painful. In the device of ypresent invention it is the purpose thereof to provide a spring wirearrangement adaptable to (it the upright rods of the ear phones andextend downwardly under the chin. By providing an adjustable means underthe chin and attached to this spring wire the pressure may be regulatedto suit the wearer.

Referring to the drawings Figure 1 is a front plan View of a head setshowing my device as attached thereto.

Figure 2 is a detail sectional view of the clamping member adapted toengage the side portions and to hold the cords from th ear phones.

Figure 3 is a fragmentary view of the adjusting means or turnbuckleshowing the knurling on the outside thereof.

in the drawings 1 indicates the usual head band of the head phones; 2and 3 Application filed September 25, 1925. Serial No. 58,546.

dicate the ear phones; and 4 and 5 represent the usual rod connectionbetween the head piece and the ear phones respectively.

A piece of spring wire is bent substantially to form a U shaped memberhaving parallel side portions 6 and 7, the upper ends of which are bentinwardly to form a hook 8 and 9 adapted to engage the posts 4 and 5 ofthe ear phones extending through the usual connections at the extremeends of the head band 1. The lower portion of the U shaped member isbent inwardly and downwardly to form parallel side portions 10 and 11 ofa-lesser diameter than that of the side portions 6 and 7 and the lowercurved portion 12 is permitted to extend downwardly far enough toprevent any interference with the chin.

As a means for adjustment of the ear phones through this U shaped memberI have provided a turnbuckle 13 which is interiorly screwthreaded with aright and left hand thread respectively. Rods 14 and 15 similarlyscrewthreaded are adapted to engage the screwthreads of the turnbuckle13. At the outer ends of these rod members are double clamp members 16and 17 rigidly secured thereto and provided with openings 18 and 19. Theopenings 18 are adapted to fit over and hold securely therein the sideportions 10 and 11 while the outer openings 19 are provided to receivethe ordinar 1 cords 20 and 2-1 attached to the ear phones. As anassistance for rotating the turnbuckle 13 I have provided a knurling 22on the outer surface thereof.

In adjusting the device where it is found that the ear phones producetoo great a pressure upon the ears it is only necessary to rotate theturnbuckle'in the proper direction to cause the rods to traveloutwardly. This outward travel causes pressure against the parallel sideportions 10 and 11 causing them to be forced outwardly and at the sametime causing the upper side port-ions to be likewise thrust outwardly.Due to the fact that the upper ends of the side portions are hooked toengage the rods 4 and 5 it will be readily seen that any movement ofthese side portions will necessarily cause a similar movement of therods at and 5 holding the ear phones thereby drawing them away from theears and. relieving the pressure therei'froma comprising a U shapedmember formed of resilient material, having its ends shaped to formhooks adapted to engage the stems carrying the receivers and force themoutward. against the inward pressure of the head band, and adjustablemeans for regulating the force of the U shaped member.

In testimony whereof, I hereunto aflix my signature.

JOHN M. LOIVREY.

